% (c) The GRASP/AQUA Project, Glasgow University, 1993-2000
%
\begin{code}
--- | Main driver for the compiling plain Haskell source code.
+-- | Main API for compiling plain Haskell source code.
--
--- This module implements compilation of a Haskell-only source file. It is
--- /not/ concerned with preprocessing of source files; this is handled in
--- "DriverPipeline".
+-- This module implements compilation of a Haskell source. It is
+-- /not/ concerned with preprocessing of source files; this is handled
+-- in "DriverPipeline".
+--
+-- There are various entry points depending on what mode we're in:
+-- "batch" mode (@--make@), "one-shot" mode (@-c@, @-S@ etc.), and
+-- "interactive" mode (GHCi). There are also entry points for
+-- individual passes: parsing, typechecking/renaming, desugaring, and
+-- simplification.
+--
+-- All the functions here take an 'HscEnv' as a parameter, but none of
+-- them return a new one: 'HscEnv' is treated as an immutable value
+-- from here on in (although it has mutable components, for the
+-- caches).
+--
+-- Warning messages are dealt with consistently throughout this API:
+-- during compilation warnings are collected, and before any function
+-- in @HscMain@ returns, the warnings are either printed, or turned
+-- into a real compialtion error if the @-Werror@ flag is enabled.
--
module HscMain
- ( newHscEnv, hscCmmFile
- , hscParseIdentifier
- , hscSimplify
- , hscNormalIface, hscWriteIface, hscGenHardCode
-#ifdef GHCI
- , hscStmt, hscTcExpr, hscImport, hscKcType
- , compileExpr
-#endif
- , HsCompiler(..)
- , hscOneShotCompiler, hscNothingCompiler
- , hscInteractiveCompiler, hscBatchCompiler
- , hscCompileOneShot -- :: Compiler HscStatus
- , hscCompileBatch -- :: Compiler (HscStatus, ModIface, ModDetails)
- , hscCompileNothing -- :: Compiler (HscStatus, ModIface, ModDetails)
- , hscCompileInteractive -- :: Compiler (InteractiveStatus, ModIface, ModDetails)
- , hscCheckRecompBackend
+ (
+ -- * Making an HscEnv
+ newHscEnv
+
+ -- * Compiling complete source files
+ , Compiler
, HscStatus' (..)
, InteractiveStatus, HscStatus
-
- -- The new interface
+ , hscCompileOneShot
+ , hscCompileBatch
+ , hscCompileNothing
+ , hscCompileInteractive
+ , hscCompileCmmFile
+ , hscCompileCore
+
+ -- * Running passes separately
, hscParse
- , hscTypecheck
, hscTypecheckRename
, hscDesugar
, makeSimpleIface
, makeSimpleDetails
+ , hscSimplify -- ToDo, shouldn't really export this
+
+ -- ** Backends
+ , hscOneShotBackendOnly
+ , hscBatchBackendOnly
+ , hscNothingBackendOnly
+ , hscInteractiveBackendOnly
+
+ -- * Support for interactive evaluation
+ , hscParseIdentifier
+ , hscTcRcLookupName
+ , hscTcRnGetInfo
+ , hscRnImportDecls
+#ifdef GHCI
+ , hscGetModuleExports
+ , hscTcRnLookupRdrName
+ , hscStmt, hscTcExpr, hscImport, hscKcType
+ , hscCompileCoreExpr
+#endif
+
) where
#ifdef GHCI
-import CodeOutput ( outputForeignStubs )
import ByteCodeGen ( byteCodeGen, coreExprToBCOs )
import Linker ( HValue, linkExpr )
import CoreTidy ( tidyExpr )
-import CorePrep ( corePrepExpr )
-import Desugar ( deSugarExpr )
-import SimplCore ( simplifyExpr )
-import TcRnDriver ( tcRnStmt, tcRnExpr, tcRnType )
-import Type ( Type, tyVarsOfTypes )
+import Type ( Type )
+import TcType ( tyVarsOfTypes )
import PrelNames ( iNTERACTIVE )
import {- Kind parts of -} Type ( Kind )
import Id ( idType )
import CoreLint ( lintUnfolding )
import DsMeta ( templateHaskellNames )
-import SrcLoc ( SrcSpan, noSrcLoc, interactiveSrcLoc, srcLocSpan, noSrcSpan, unLoc )
import VarSet
import VarEnv ( emptyTidyEnv )
import Panic
import RdrName
import HsSyn
import CoreSyn
-import SrcLoc ( Located(..) )
import StringBuffer
import Parser
-import Lexer
-import SrcLoc ( mkSrcLoc )
-import TcRnDriver ( tcRnModule )
+import Lexer hiding (getDynFlags)
+import SrcLoc
+import TcRnDriver
import TcIface ( typecheckIface )
-import TcRnMonad ( initIfaceCheck, TcGblEnv(..) )
+import TcRnMonad
+import RnNames ( rnImports )
import IfaceEnv ( initNameCache )
import LoadIface ( ifaceStats, initExternalPackageState )
import PrelInfo ( wiredInThings, basicKnownKeyNames )
import MkIface
-import Desugar ( deSugar )
-import SimplCore ( core2core )
+import Desugar
+import SimplCore
import TidyPgm
-import CorePrep ( corePrepPgm )
+import CorePrep
import CoreToStg ( coreToStg )
import qualified StgCmm ( codeGen )
import StgSyn
import CmmCvt
import CmmTx
import CmmContFlowOpt
-import CodeOutput ( codeOutput )
+import CodeOutput
import NameEnv ( emptyNameEnv )
+import NameSet ( emptyNameSet )
+import InstEnv
+import FamInstEnv ( emptyFamInstEnv )
import Fingerprint ( Fingerprint )
import DynFlags
import ErrUtils
import UniqSupply ( mkSplitUniqSupply )
+import MonadUtils
import Outputable
import HscStats ( ppSourceStats )
import HscTypes
import FastString
import UniqFM ( emptyUFM )
import UniqSupply ( initUs_ )
-import Bag ( unitBag )
+import Bag
import Exception
-- import MonadUtils
%************************************************************************
\begin{code}
-newHscEnv :: GhcApiCallbacks -> DynFlags -> IO HscEnv
-newHscEnv callbacks dflags
+newHscEnv :: DynFlags -> IO HscEnv
+newHscEnv dflags
= do { eps_var <- newIORef initExternalPackageState
; us <- mkSplitUniqSupply 'r'
; nc_var <- newIORef (initNameCache us knownKeyNames)
; mlc_var <- newIORef emptyModuleEnv
; optFuel <- initOptFuelState
; return (HscEnv { hsc_dflags = dflags,
- hsc_callbacks = callbacks,
hsc_targets = [],
hsc_mod_graph = [],
hsc_IC = emptyInteractiveContext,
#ifdef GHCI
++ templateHaskellNames
#endif
-\end{code}
+-- -----------------------------------------------------------------------------
+-- The Hsc monad: collecting warnings
-\begin{code}
+newtype Hsc a = Hsc (HscEnv -> WarningMessages -> IO (a, WarningMessages))
+
+instance Monad Hsc where
+ return a = Hsc $ \_ w -> return (a, w)
+ Hsc m >>= k = Hsc $ \e w -> do (a, w1) <- m e w
+ case k a of
+ Hsc k' -> k' e w1
+
+instance MonadIO Hsc where
+ liftIO io = Hsc $ \_ w -> do a <- io; return (a, w)
+
+runHsc :: HscEnv -> Hsc a -> IO a
+runHsc hsc_env (Hsc hsc) = do
+ (a, w) <- hsc hsc_env emptyBag
+ printOrThrowWarnings (hsc_dflags hsc_env) w
+ return a
+
+getWarnings :: Hsc WarningMessages
+getWarnings = Hsc $ \_ w -> return (w, w)
+
+clearWarnings :: Hsc ()
+clearWarnings = Hsc $ \_ _w -> return ((), emptyBag)
+
+logWarnings :: WarningMessages -> Hsc ()
+logWarnings w = Hsc $ \_ w0 -> return ((), w0 `unionBags` w)
+
+getHscEnv :: Hsc HscEnv
+getHscEnv = Hsc $ \e w -> return (e, w)
+
+getDynFlags :: Hsc DynFlags
+getDynFlags = Hsc $ \e w -> return (hsc_dflags e, w)
+
+handleWarnings :: Hsc ()
+handleWarnings = do
+ dflags <- getDynFlags
+ w <- getWarnings
+ liftIO $ printOrThrowWarnings dflags w
+ clearWarnings
+
+-- | log warning in the monad, and if there are errors then
+-- throw a SourceError exception.
+logWarningsReportErrors :: Messages -> Hsc ()
+logWarningsReportErrors (warns,errs) = do
+ logWarnings warns
+ when (not (isEmptyBag errs)) $ do
+ liftIO $ throwIO $ mkSrcErr errs
+
+-- | Deal with errors and warnings returned by a compilation step
+--
+-- In order to reduce dependencies to other parts of the compiler, functions
+-- outside the "main" parts of GHC return warnings and errors as a parameter
+-- and signal success via by wrapping the result in a 'Maybe' type. This
+-- function logs the returned warnings and propagates errors as exceptions
+-- (of type 'SourceError').
+--
+-- This function assumes the following invariants:
+--
+-- 1. If the second result indicates success (is of the form 'Just x'),
+-- there must be no error messages in the first result.
+--
+-- 2. If there are no error messages, but the second result indicates failure
+-- there should be warnings in the first result. That is, if the action
+-- failed, it must have been due to the warnings (i.e., @-Werror@).
+ioMsgMaybe :: IO (Messages, Maybe a) -> Hsc a
+ioMsgMaybe ioA = do
+ ((warns,errs), mb_r) <- liftIO $ ioA
+ logWarnings warns
+ case mb_r of
+ Nothing -> liftIO $ throwIO (mkSrcErr errs)
+ Just r -> ASSERT( isEmptyBag errs ) return r
+
+-- | like ioMsgMaybe, except that we ignore error messages and return
+-- 'Nothing' instead.
+ioMsgMaybe' :: IO (Messages, Maybe a) -> Hsc (Maybe a)
+ioMsgMaybe' ioA = do
+ ((warns,_errs), mb_r) <- liftIO $ ioA
+ logWarnings warns
+ return mb_r
+
+-- -----------------------------------------------------------------------------
+-- | Lookup things in the compiler's environment
+
+#ifdef GHCI
+hscTcRnLookupRdrName :: HscEnv -> RdrName -> IO [Name]
+hscTcRnLookupRdrName hsc_env rdr_name =
+ runHsc hsc_env $ ioMsgMaybe $ tcRnLookupRdrName hsc_env rdr_name
+#endif
+
+hscTcRcLookupName :: HscEnv -> Name -> IO (Maybe TyThing)
+hscTcRcLookupName hsc_env name =
+ runHsc hsc_env $ ioMsgMaybe' $ tcRnLookupName hsc_env name
+ -- ignore errors: the only error we're likely to get is
+ -- "name not found", and the Maybe in the return type
+ -- is used to indicate that.
+
+hscTcRnGetInfo :: HscEnv -> Name -> IO (Maybe (TyThing, Fixity, [Instance]))
+hscTcRnGetInfo hsc_env name =
+ runHsc hsc_env $ ioMsgMaybe' $ tcRnGetInfo hsc_env name
+
+#ifdef GHCI
+hscGetModuleExports :: HscEnv -> Module -> IO (Maybe [AvailInfo])
+hscGetModuleExports hsc_env mdl =
+ runHsc hsc_env $ ioMsgMaybe' $ getModuleExports hsc_env mdl
+#endif
+
+-- -----------------------------------------------------------------------------
+-- | Rename some import declarations
+
+hscRnImportDecls
+ :: HscEnv
+ -> Module
+ -> [LImportDecl RdrName]
+ -> IO GlobalRdrEnv
+
+hscRnImportDecls hsc_env this_mod import_decls = runHsc hsc_env $ do
+ (_, r, _, _) <-
+ ioMsgMaybe $ initTc hsc_env HsSrcFile False this_mod $
+ rnImports import_decls
+ return r
+
+-- -----------------------------------------------------------------------------
-- | parse a file, returning the abstract syntax
-hscParse :: GhcMonad m =>
- ModSummary
- -> m (Located (HsModule RdrName))
-hscParse mod_summary = do
- hsc_env <- getSession
- let dflags = hsc_dflags hsc_env
+
+hscParse :: HscEnv -> ModSummary -> IO (Located (HsModule RdrName))
+hscParse hsc_env mod_summary = runHsc hsc_env $ hscParse' mod_summary
+
+-- internal version, that doesn't fail due to -Werror
+hscParse' :: ModSummary -> Hsc (Located (HsModule RdrName))
+hscParse' mod_summary
+ = do
+ dflags <- getDynFlags
+ let
src_filename = ms_hspp_file mod_summary
maybe_src_buf = ms_hspp_buf mod_summary
+
-------------------------- Parser ----------------
liftIO $ showPass dflags "Parser"
{-# SCC "Parser" #-} do
case unP parseModule (mkPState dflags buf loc) of
PFailed span err ->
- throwOneError (mkPlainErrMsg span err)
+ liftIO $ throwOneError (mkPlainErrMsg span err)
POk pst rdr_module -> do
- let ms@(warns,errs) = getMessages pst
- logWarnings warns
- if errorsFound dflags ms then
- liftIO $ throwIO $ mkSrcErr errs
- else liftIO $ do
- dumpIfSet_dyn dflags Opt_D_dump_parsed "Parser" (ppr rdr_module) ;
- dumpIfSet_dyn dflags Opt_D_source_stats "Source Statistics"
- (ppSourceStats False rdr_module) ;
- return rdr_module
+ logWarningsReportErrors (getMessages pst)
+ liftIO $ dumpIfSet_dyn dflags Opt_D_dump_parsed "Parser" $
+ ppr rdr_module
+ liftIO $ dumpIfSet_dyn dflags Opt_D_source_stats "Source Statistics" $
+ ppSourceStats False rdr_module
+ return rdr_module
-- ToDo: free the string buffer later.
--- | Rename and typecheck a module
-hscTypecheck :: GhcMonad m =>
- ModSummary -> Located (HsModule RdrName)
- -> m TcGblEnv
-hscTypecheck mod_summary rdr_module = do
- hsc_env <- getSession
- r <- {-# SCC "Typecheck-Rename" #-}
- ioMsgMaybe $ tcRnModule hsc_env (ms_hsc_src mod_summary) False rdr_module
- return r
-
-- XXX: should this really be a Maybe X? Check under which circumstances this
-- can become a Nothing and decide whether this should instead throw an
-- exception/signal an error.
Maybe LHsDocString))
-- | Rename and typecheck a module, additionally returning the renamed syntax
-hscTypecheckRename ::
- GhcMonad m =>
- ModSummary -> Located (HsModule RdrName)
- -> m (TcGblEnv, RenamedStuff)
-hscTypecheckRename mod_summary rdr_module = do
- hsc_env <- getSession
- tc_result
+hscTypecheckRename :: HscEnv -> ModSummary -> Located (HsModule RdrName)
+ -> IO (TcGblEnv, RenamedStuff)
+hscTypecheckRename hsc_env mod_summary rdr_module
+ = runHsc hsc_env $ do
+ tc_result
<- {-# SCC "Typecheck-Rename" #-}
- ioMsgMaybe $ tcRnModule hsc_env (ms_hsc_src mod_summary) True rdr_module
+ ioMsgMaybe $
+ tcRnModule hsc_env (ms_hsc_src mod_summary) True rdr_module
- let -- This 'do' is in the Maybe monad!
- rn_info = do { decl <- tcg_rn_decls tc_result
- ; let imports = tcg_rn_imports tc_result
+ let -- This 'do' is in the Maybe monad!
+ rn_info = do decl <- tcg_rn_decls tc_result
+ let imports = tcg_rn_imports tc_result
exports = tcg_rn_exports tc_result
doc_hdr = tcg_doc_hdr tc_result
- ; return (decl,imports,exports,doc_hdr) }
+ return (decl,imports,exports,doc_hdr)
- return (tc_result, rn_info)
+ return (tc_result, rn_info)
-- | Convert a typechecked module to Core
-hscDesugar :: GhcMonad m => ModSummary -> TcGblEnv -> m ModGuts
-hscDesugar mod_summary tc_result =
- withSession $ \hsc_env ->
- ioMsgMaybe $ deSugar hsc_env (ms_location mod_summary) tc_result
+hscDesugar :: HscEnv -> ModSummary -> TcGblEnv -> IO ModGuts
+hscDesugar hsc_env mod_summary tc_result
+ = runHsc hsc_env $ hscDesugar' mod_summary tc_result
+
+hscDesugar' :: ModSummary -> TcGblEnv -> Hsc ModGuts
+hscDesugar' mod_summary tc_result
+ = do
+ hsc_env <- getHscEnv
+ r <- ioMsgMaybe $
+ deSugar hsc_env (ms_location mod_summary) tc_result
+
+ handleWarnings
+ -- always check -Werror after desugaring, this is
+ -- the last opportunity for warnings to arise before
+ -- the backend.
+ return r
-- | Make a 'ModIface' from the results of typechecking. Used when
-- not optimising, and the interface doesn't need to contain any
-- unfoldings or other cross-module optimisation info.
-- ToDo: the old interface is only needed to get the version numbers,
-- we should use fingerprint versions instead.
-makeSimpleIface :: GhcMonad m =>
+makeSimpleIface :: HscEnv ->
Maybe ModIface -> TcGblEnv -> ModDetails
- -> m (ModIface,Bool)
-makeSimpleIface maybe_old_iface tc_result details =
- withSession $ \hsc_env ->
- ioMsgMaybe $ mkIfaceTc hsc_env (fmap mi_iface_hash maybe_old_iface) details tc_result
+ -> IO (ModIface,Bool)
+makeSimpleIface hsc_env maybe_old_iface tc_result details
+ = runHsc hsc_env $
+ ioMsgMaybe $
+ mkIfaceTc hsc_env (fmap mi_iface_hash maybe_old_iface) details tc_result
-- | Make a 'ModDetails' from the results of typechecking. Used when
-- typechecking only, as opposed to full compilation.
-makeSimpleDetails :: GhcMonad m => TcGblEnv -> m ModDetails
-makeSimpleDetails tc_result =
- withSession $ \hsc_env -> liftIO $ mkBootModDetailsTc hsc_env tc_result
+makeSimpleDetails :: HscEnv -> TcGblEnv -> IO ModDetails
+makeSimpleDetails hsc_env tc_result = mkBootModDetailsTc hsc_env tc_result
\end{code}
%************************************************************************
-- FIXME: The old interface and module index are only using in 'batch' and
-- 'interactive' mode. They should be removed from 'oneshot' mode.
-type Compiler result = GhcMonad m =>
- HscEnv
+type Compiler result = HscEnv
-> ModSummary
-> Bool -- True <=> source unchanged
-> Maybe ModIface -- Old interface, if available
-> Maybe (Int,Int) -- Just (i,n) <=> module i of n (for msgs)
- -> m result
+ -> IO result
data HsCompiler a
= HsCompiler {
-- | Called when no recompilation is necessary.
- hscNoRecomp :: GhcMonad m =>
- ModIface -> m a,
+ hscNoRecomp :: ModIface
+ -> Hsc a,
-- | Called to recompile the module.
- hscRecompile :: GhcMonad m =>
- ModSummary -> Maybe Fingerprint -> m a,
+ hscRecompile :: ModSummary -> Maybe Fingerprint
+ -> Hsc a,
- hscBackend :: GhcMonad m =>
- TcGblEnv -> ModSummary -> Maybe Fingerprint -> m a,
+ hscBackend :: TcGblEnv -> ModSummary -> Maybe Fingerprint
+ -> Hsc a,
-- | Code generation for Boot modules.
- hscGenBootOutput :: GhcMonad m =>
- TcGblEnv -> ModSummary -> Maybe Fingerprint -> m a,
+ hscGenBootOutput :: TcGblEnv -> ModSummary -> Maybe Fingerprint
+ -> Hsc a,
-- | Code generation for normal modules.
- hscGenOutput :: GhcMonad m =>
- ModGuts -> ModSummary -> Maybe Fingerprint -> m a
+ hscGenOutput :: ModGuts -> ModSummary -> Maybe Fingerprint
+ -> Hsc a
}
-genericHscCompile :: GhcMonad m =>
- HsCompiler a
- -> (Maybe (Int,Int) -> Bool -> ModSummary -> m ())
+genericHscCompile :: HsCompiler a
+ -> (HscEnv -> Maybe (Int,Int) -> Bool -> ModSummary -> IO ())
-> HscEnv -> ModSummary -> Bool
-> Maybe ModIface -> Maybe (Int, Int)
- -> m a
-genericHscCompile compiler hscMessage
- hsc_env mod_summary source_unchanged
- mb_old_iface0 mb_mod_index =
- withTempSession (\_ -> hsc_env) $ do
+ -> IO a
+genericHscCompile compiler hscMessage hsc_env
+ mod_summary source_unchanged
+ mb_old_iface0 mb_mod_index
+ = do
(recomp_reqd, mb_checked_iface)
<- {-# SCC "checkOldIface" #-}
- liftIO $ checkOldIface hsc_env mod_summary
- source_unchanged mb_old_iface0
+ checkOldIface hsc_env mod_summary
+ source_unchanged mb_old_iface0
-- save the interface that comes back from checkOldIface.
-- In one-shot mode we don't have the old iface until this
-- point, when checkOldIface reads it from the disk.
let mb_old_hash = fmap mi_iface_hash mb_checked_iface
case mb_checked_iface of
Just iface | not recomp_reqd
- -> do hscMessage mb_mod_index False mod_summary
- hscNoRecomp compiler iface
+ -> do hscMessage hsc_env mb_mod_index False mod_summary
+ runHsc hsc_env $ hscNoRecomp compiler iface
_otherwise
- -> do hscMessage mb_mod_index True mod_summary
- hscRecompile compiler mod_summary mb_old_hash
+ -> do hscMessage hsc_env mb_mod_index True mod_summary
+ runHsc hsc_env $ hscRecompile compiler mod_summary mb_old_hash
hscCheckRecompBackend :: HsCompiler a -> TcGblEnv -> Compiler a
hscCheckRecompBackend compiler tc_result
- hsc_env mod_summary source_unchanged mb_old_iface _m_of_n =
- withTempSession (\_ -> hsc_env) $ do
+ hsc_env mod_summary source_unchanged mb_old_iface _m_of_n
+ = do
(recomp_reqd, mb_checked_iface)
<- {-# SCC "checkOldIface" #-}
- liftIO $ checkOldIface hsc_env mod_summary
- source_unchanged mb_old_iface
+ checkOldIface hsc_env mod_summary
+ source_unchanged mb_old_iface
let mb_old_hash = fmap mi_iface_hash mb_checked_iface
case mb_checked_iface of
Just iface | not recomp_reqd
- -> hscNoRecomp compiler iface{ mi_globals = Just (tcg_rdr_env tc_result) }
+ -> runHsc hsc_env $
+ hscNoRecomp compiler
+ iface{ mi_globals = Just (tcg_rdr_env tc_result) }
_otherwise
- -> hscBackend compiler tc_result mod_summary mb_old_hash
+ -> runHsc hsc_env $
+ hscBackend compiler tc_result mod_summary mb_old_hash
-genericHscRecompile :: GhcMonad m =>
- HsCompiler a
+genericHscRecompile :: HsCompiler a
-> ModSummary -> Maybe Fingerprint
- -> m a
+ -> Hsc a
genericHscRecompile compiler mod_summary mb_old_hash
| ExtCoreFile <- ms_hsc_src mod_summary =
panic "GHC does not currently support reading External Core files"
tc_result <- hscFileFrontEnd mod_summary
hscBackend compiler tc_result mod_summary mb_old_hash
-genericHscBackend :: GhcMonad m =>
- HsCompiler a
+genericHscBackend :: HsCompiler a
-> TcGblEnv -> ModSummary -> Maybe Fingerprint
- -> m a
+ -> Hsc a
genericHscBackend compiler tc_result mod_summary mb_old_hash
| HsBootFile <- ms_hsc_src mod_summary =
hscGenBootOutput compiler tc_result mod_summary mb_old_hash
| otherwise = do
- guts <- hscDesugar mod_summary tc_result
+ guts <- hscDesugar' mod_summary tc_result
hscGenOutput compiler guts mod_summary mb_old_hash
+compilerBackend :: HsCompiler a -> TcGblEnv -> Compiler a
+compilerBackend comp tcg hsc_env ms' _ _mb_old_iface _ =
+ runHsc hsc_env $
+ hscBackend comp tcg ms' Nothing
+
--------------------------------------------------------------
-- Compilers
--------------------------------------------------------------
HsCompiler {
hscNoRecomp = \_old_iface -> do
- withSession (liftIO . dumpIfaceStats)
+ hsc_env <- getHscEnv
+ liftIO $ dumpIfaceStats hsc_env
return HscNoRecomp
, hscRecompile = genericHscRecompile hscOneShotCompiler
, hscBackend = \ tc_result mod_summary mb_old_hash -> do
- hsc_env <- getSession
- case hscTarget (hsc_dflags hsc_env) of
+ dflags <- getDynFlags
+ case hscTarget dflags of
HscNothing -> return (HscRecomp False ())
- _otherw -> genericHscBackend hscOneShotCompiler
+ _otherw -> genericHscBackend hscOneShotCompiler
tc_result mod_summary mb_old_hash
, hscGenBootOutput = \tc_result mod_summary mb_old_iface -> do
return (HscRecomp False ())
, hscGenOutput = \guts0 mod_summary mb_old_iface -> do
- guts <- hscSimplify guts0
- (iface, changed, _details, cgguts)
- <- hscNormalIface guts mb_old_iface
+ guts <- hscSimplify' guts0
+ (iface, changed, _details, cgguts) <- hscNormalIface guts mb_old_iface
hscWriteIface iface changed mod_summary
hasStub <- hscGenHardCode cgguts mod_summary
return (HscRecomp hasStub ())
-- Compile Haskell, boot and extCore in OneShot mode.
hscCompileOneShot :: Compiler OneShotResult
-hscCompileOneShot hsc_env mod_summary src_changed mb_old_iface mb_i_of_n = do
+hscCompileOneShot hsc_env mod_summary src_changed mb_old_iface mb_i_of_n
+ = do
-- One-shot mode needs a knot-tying mutable variable for interface
-- files. See TcRnTypes.TcGblEnv.tcg_type_env_var.
- type_env_var <- liftIO $ newIORef emptyNameEnv
+ type_env_var <- newIORef emptyNameEnv
let
mod = ms_mod mod_summary
hsc_env' = hsc_env{ hsc_type_env_var = Just (mod, type_env_var) }
mb_old_iface mb_i_of_n
+hscOneShotBackendOnly :: TcGblEnv -> Compiler OneShotResult
+hscOneShotBackendOnly = compilerBackend hscOneShotCompiler
+
--------------------------------------------------------------
hscBatchCompiler :: HsCompiler BatchResult
, hscBackend = genericHscBackend hscBatchCompiler
, hscGenBootOutput = \tc_result mod_summary mb_old_iface -> do
- (iface, changed, details)
- <- hscSimpleIface tc_result mb_old_iface
+ (iface, changed, details) <- hscSimpleIface tc_result mb_old_iface
hscWriteIface iface changed mod_summary
return (HscRecomp False (), iface, details)
, hscGenOutput = \guts0 mod_summary mb_old_iface -> do
- guts <- hscSimplify guts0
- (iface, changed, details, cgguts)
- <- hscNormalIface guts mb_old_iface
+ guts <- hscSimplify' guts0
+ (iface, changed, details, cgguts) <- hscNormalIface guts mb_old_iface
hscWriteIface iface changed mod_summary
hasStub <- hscGenHardCode cgguts mod_summary
return (HscRecomp hasStub (), iface, details)
hscCompileBatch :: Compiler (HscStatus, ModIface, ModDetails)
hscCompileBatch = genericHscCompile hscBatchCompiler batchMsg
+hscBatchBackendOnly :: TcGblEnv -> Compiler BatchResult
+hscBatchBackendOnly = hscCheckRecompBackend hscBatchCompiler
+
--------------------------------------------------------------
hscInteractiveCompiler :: HsCompiler InteractiveResult
return (HscRecomp False Nothing, iface, details)
, hscGenOutput = \guts0 mod_summary mb_old_iface -> do
- guts <- hscSimplify guts0
- (iface, _changed, details, cgguts)
- <- hscNormalIface guts mb_old_iface
+ guts <- hscSimplify' guts0
+ (iface, _changed, details, cgguts) <- hscNormalIface guts mb_old_iface
hscInteractive (iface, details, cgguts) mod_summary
}
hscCompileInteractive :: Compiler (InteractiveStatus, ModIface, ModDetails)
hscCompileInteractive = genericHscCompile hscInteractiveCompiler batchMsg
+hscInteractiveBackendOnly :: TcGblEnv -> Compiler InteractiveResult
+hscInteractiveBackendOnly = compilerBackend hscInteractiveCompiler
+
--------------------------------------------------------------
hscNothingCompiler :: HsCompiler NothingResult
, hscRecompile = genericHscRecompile hscNothingCompiler
, hscBackend = \tc_result _mod_summary mb_old_iface -> do
+ handleWarnings
(iface, _changed, details) <- hscSimpleIface tc_result mb_old_iface
return (HscRecomp False (), iface, details)
hscCompileNothing :: Compiler (HscStatus, ModIface, ModDetails)
hscCompileNothing = genericHscCompile hscNothingCompiler batchMsg
+hscNothingBackendOnly :: TcGblEnv -> Compiler NothingResult
+hscNothingBackendOnly = compilerBackend hscNothingCompiler
+
--------------------------------------------------------------
-- NoRecomp handlers
--------------------------------------------------------------
-genModDetails :: GhcMonad m => ModIface -> m ModDetails
-genModDetails old_iface =
- withSession $ \hsc_env -> liftIO $ do
+genModDetails :: ModIface -> Hsc ModDetails
+genModDetails old_iface
+ = do
+ hsc_env <- getHscEnv
new_details <- {-# SCC "tcRnIface" #-}
- initIfaceCheck hsc_env $
- typecheckIface old_iface
- dumpIfaceStats hsc_env
+ liftIO $ initIfaceCheck hsc_env $
+ typecheckIface old_iface
+ liftIO $ dumpIfaceStats hsc_env
return new_details
--------------------------------------------------------------
-- Progress displayers.
--------------------------------------------------------------
-oneShotMsg :: GhcMonad m => Maybe (Int,Int) -> Bool -> ModSummary -> m ()
-oneShotMsg _mb_mod_index recomp _mod_summary
- = do hsc_env <- getSession
- liftIO $ do
+oneShotMsg :: HscEnv -> Maybe (Int,Int) -> Bool -> ModSummary -> IO ()
+oneShotMsg hsc_env _mb_mod_index recomp _mod_summary =
if recomp
then return ()
else compilationProgressMsg (hsc_dflags hsc_env) $
"compilation IS NOT required"
-batchMsg :: GhcMonad m => Maybe (Int,Int) -> Bool -> ModSummary -> m ()
-batchMsg mb_mod_index recomp mod_summary
- = do hsc_env <- getSession
+batchMsg :: HscEnv -> Maybe (Int,Int) -> Bool -> ModSummary -> IO ()
+batchMsg hsc_env mb_mod_index recomp mod_summary
+ = do
let showMsg msg = compilationProgressMsg (hsc_dflags hsc_env) $
(showModuleIndex mb_mod_index ++
msg ++ showModMsg (hscTarget (hsc_dflags hsc_env)) recomp mod_summary)
- liftIO $ do
if recomp
then showMsg "Compiling "
else if verbosity (hsc_dflags hsc_env) >= 2
--------------------------------------------------------------
-- FrontEnds
--------------------------------------------------------------
-hscFileFrontEnd :: GhcMonad m => ModSummary -> m TcGblEnv
+
+hscFileFrontEnd :: ModSummary -> Hsc TcGblEnv
hscFileFrontEnd mod_summary =
- do rdr_module <- hscParse mod_summary
- hscTypecheck mod_summary rdr_module
+ do rdr_module <- hscParse' mod_summary
+ hsc_env <- getHscEnv
+ {-# SCC "Typecheck-Rename" #-}
+ ioMsgMaybe $
+ tcRnModule hsc_env (ms_hsc_src mod_summary) False rdr_module
--------------------------------------------------------------
-- Simplifiers
--------------------------------------------------------------
-hscSimplify :: GhcMonad m => ModGuts -> m ModGuts
-hscSimplify ds_result
- = do hsc_env <- getSession
- simpl_result <- {-# SCC "Core2Core" #-}
- liftIO $ core2core hsc_env ds_result
- return simpl_result
+hscSimplify :: HscEnv -> ModGuts -> IO ModGuts
+hscSimplify hsc_env modguts = runHsc hsc_env $ hscSimplify' modguts
+
+hscSimplify' :: ModGuts -> Hsc ModGuts
+hscSimplify' ds_result
+ = do hsc_env <- getHscEnv
+ {-# SCC "Core2Core" #-}
+ liftIO $ core2core hsc_env ds_result
--------------------------------------------------------------
-- Interface generators
--------------------------------------------------------------
-hscSimpleIface :: GhcMonad m =>
- TcGblEnv
+hscSimpleIface :: TcGblEnv
-> Maybe Fingerprint
- -> m (ModIface, Bool, ModDetails)
+ -> Hsc (ModIface, Bool, ModDetails)
hscSimpleIface tc_result mb_old_iface
- = do hsc_env <- getSession
+ = do
+ hsc_env <- getHscEnv
details <- liftIO $ mkBootModDetailsTc hsc_env tc_result
(new_iface, no_change)
<- {-# SCC "MkFinalIface" #-}
- ioMsgMaybe $ mkIfaceTc hsc_env mb_old_iface details tc_result
+ ioMsgMaybe $
+ mkIfaceTc hsc_env mb_old_iface details tc_result
-- And the answer is ...
liftIO $ dumpIfaceStats hsc_env
return (new_iface, no_change, details)
-hscNormalIface :: GhcMonad m =>
- ModGuts
+hscNormalIface :: ModGuts
-> Maybe Fingerprint
- -> m (ModIface, Bool, ModDetails, CgGuts)
+ -> Hsc (ModIface, Bool, ModDetails, CgGuts)
hscNormalIface simpl_result mb_old_iface
- = do hsc_env <- getSession
-
+ = do
+ hsc_env <- getHscEnv
(cg_guts, details) <- {-# SCC "CoreTidy" #-}
liftIO $ tidyProgram hsc_env simpl_result
-- until after code output
(new_iface, no_change)
<- {-# SCC "MkFinalIface" #-}
- ioMsgMaybe $ mkIface hsc_env mb_old_iface
- details simpl_result
- -- Emit external core
+ ioMsgMaybe $
+ mkIface hsc_env mb_old_iface details simpl_result
+
+ -- Emit external core
-- This should definitely be here and not after CorePrep,
-- because CorePrep produces unqualified constructor wrapper declarations,
-- so its output isn't valid External Core (without some preprocessing).
-- BackEnd combinators
--------------------------------------------------------------
-hscWriteIface :: GhcMonad m =>
- ModIface -> Bool
+hscWriteIface :: ModIface
+ -> Bool
-> ModSummary
- -> m ()
+ -> Hsc ()
+
hscWriteIface iface no_change mod_summary
- = do hsc_env <- getSession
- let dflags = hsc_dflags hsc_env
- liftIO $ do
+ = do dflags <- getDynFlags
unless no_change
- $ writeIfaceFile dflags (ms_location mod_summary) iface
+ $ liftIO $ writeIfaceFile dflags (ms_location mod_summary) iface
-- | Compile to hard-code.
-hscGenHardCode :: GhcMonad m =>
- CgGuts -> ModSummary
- -> m Bool -- ^ @True@ <=> stub.c exists
+hscGenHardCode :: CgGuts -> ModSummary
+ -> Hsc Bool -- ^ @True@ <=> stub.c exists
hscGenHardCode cgguts mod_summary
- = withSession $ \hsc_env -> liftIO $ do
+ = do
+ hsc_env <- getHscEnv
+ liftIO $ do
let CgGuts{ -- This is the last use of the ModGuts in a compilation.
-- From now on, we just use the bits we need.
cg_module = this_mod,
myCoreToStg dflags this_mod prepd_binds
------------------ Code generation ------------------
- cmms <- if dopt Opt_TryNewCodeGen (hsc_dflags hsc_env)
+
+ cmms <- if dopt Opt_TryNewCodeGen dflags
then do cmms <- tryNewCodeGen hsc_env this_mod data_tycons
dir_imps cost_centre_info
stg_binds hpc_info
dependencies rawcmms
return stub_c_exists
-hscInteractive :: GhcMonad m =>
- (ModIface, ModDetails, CgGuts)
+hscInteractive :: (ModIface, ModDetails, CgGuts)
-> ModSummary
- -> m (InteractiveStatus, ModIface, ModDetails)
+ -> Hsc (InteractiveStatus, ModIface, ModDetails)
#ifdef GHCI
hscInteractive (iface, details, cgguts) mod_summary
- = do hsc_env <- getSession
- liftIO $ do
+ = do
+ dflags <- getDynFlags
let CgGuts{ -- This is the last use of the ModGuts in a compilation.
-- From now on, we just use the bits we need.
cg_module = this_mod,
cg_tycons = tycons,
cg_foreign = foreign_stubs,
cg_modBreaks = mod_breaks } = cgguts
- dflags = hsc_dflags hsc_env
+
location = ms_location mod_summary
data_tycons = filter isDataTyCon tycons
-- cg_tycons includes newtypes, for the benefit of External Core,
-- PREPARE FOR CODE GENERATION
-- Do saturation and convert to A-normal form
prepd_binds <- {-# SCC "CorePrep" #-}
- corePrepPgm dflags core_binds data_tycons ;
+ liftIO $ corePrepPgm dflags core_binds data_tycons ;
----------------- Generate byte code ------------------
- comp_bc <- byteCodeGen dflags prepd_binds data_tycons mod_breaks
+ comp_bc <- liftIO $ byteCodeGen dflags prepd_binds data_tycons mod_breaks
------------------ Create f-x-dynamic C-side stuff ---
(_istub_h_exists, istub_c_exists)
- <- outputForeignStubs dflags this_mod location foreign_stubs
+ <- liftIO $ outputForeignStubs dflags this_mod
+ location foreign_stubs
return (HscRecomp istub_c_exists (Just (comp_bc, mod_breaks))
, iface, details)
#else
------------------------------
-hscCmmFile :: GhcMonad m => HscEnv -> FilePath -> m ()
-hscCmmFile hsc_env filename = do
- dflags <- return $ hsc_dflags hsc_env
- cmm <- ioMsgMaybe $
- parseCmmFile dflags filename
- cmms <- liftIO $ optionallyConvertAndOrCPS hsc_env [cmm]
- rawCmms <- liftIO $ cmmToRawCmm cmms
- _ <- liftIO $ codeOutput dflags no_mod no_loc NoStubs [] rawCmms
- return ()
+hscCompileCmmFile :: HscEnv -> FilePath -> IO ()
+hscCompileCmmFile hsc_env filename
+ = runHsc hsc_env $ do
+ let dflags = hsc_dflags hsc_env
+ cmm <- ioMsgMaybe $ parseCmmFile dflags filename
+ liftIO $ do
+ cmms <- optionallyConvertAndOrCPS hsc_env [cmm]
+ rawCmms <- cmmToRawCmm cmms
+ _ <- codeOutput dflags no_mod no_loc NoStubs [] rawCmms
+ return ()
where
no_mod = panic "hscCmmFile: no_mod"
no_loc = ModLocation{ ml_hs_file = Just filename,
\begin{code}
#ifdef GHCI
hscStmt -- Compile a stmt all the way to an HValue, but don't run it
- :: GhcMonad m =>
- HscEnv
+ :: HscEnv
-> String -- The statement
- -> m (Maybe ([Id], HValue))
+ -> IO (Maybe ([Id], HValue))
-- ^ 'Nothing' <==> empty statement (or comment only), but no parse error
-hscStmt hsc_env stmt = do
- maybe_stmt <- hscParseStmt (hsc_dflags hsc_env) stmt
+hscStmt hsc_env stmt = runHsc hsc_env $ do
+ maybe_stmt <- hscParseStmt stmt
case maybe_stmt of
Nothing -> return Nothing
Just parsed_stmt -> do -- The real stuff
-- Rename and typecheck it
let icontext = hsc_IC hsc_env
- (ids, tc_expr) <- ioMsgMaybe $ tcRnStmt hsc_env icontext parsed_stmt
+ (ids, tc_expr) <- ioMsgMaybe $
+ tcRnStmt hsc_env icontext parsed_stmt
-- Desugar it
let rdr_env = ic_rn_gbl_env icontext
type_env = mkTypeEnv (map AnId (ic_tmp_ids icontext))
ds_expr <- ioMsgMaybe $
deSugarExpr hsc_env iNTERACTIVE rdr_env type_env tc_expr
+ handleWarnings
-- Then desugar, code gen, and link it
let src_span = srcLocSpan interactiveSrcLoc
- hval <- liftIO $ compileExpr hsc_env src_span ds_expr
+ hsc_env <- getHscEnv
+ hval <- liftIO $ hscCompileCoreExpr hsc_env src_span ds_expr
return $ Just (ids, hval)
-hscImport :: GhcMonad m => HscEnv -> String -> m (ImportDecl RdrName)
-hscImport hsc_env str = do
- (L _ (HsModule{hsmodImports=is})) <- hscParseThing parseModule (hsc_dflags hsc_env) str
+hscImport :: HscEnv -> String -> IO (ImportDecl RdrName)
+hscImport hsc_env str = runHsc hsc_env $ do
+ (L _ (HsModule{hsmodImports=is})) <-
+ hscParseThing parseModule str
case is of
[i] -> return (unLoc i)
- _ -> throwOneError (mkPlainErrMsg noSrcSpan (ptext (sLit "parse error in import declaration")))
+ _ -> liftIO $ throwOneError $
+ mkPlainErrMsg noSrcSpan $
+ ptext (sLit "parse error in import declaration")
hscTcExpr -- Typecheck an expression (but don't run it)
- :: GhcMonad m =>
- HscEnv
+ :: HscEnv
-> String -- The expression
- -> m Type
+ -> IO Type
-hscTcExpr hsc_env expr = do
- maybe_stmt <- hscParseStmt (hsc_dflags hsc_env) expr
- let icontext = hsc_IC hsc_env
+hscTcExpr hsc_env expr = runHsc hsc_env $ do
+ maybe_stmt <- hscParseStmt expr
case maybe_stmt of
- Just (L _ (ExprStmt expr _ _)) -> do
- ty <- ioMsgMaybe $ tcRnExpr hsc_env icontext expr
- return ty
- _ -> do throw $ mkSrcErr $ unitBag $ mkPlainErrMsg
- noSrcSpan
- (text "not an expression:" <+> quotes (text expr))
+ Just (L _ (ExprStmt expr _ _)) ->
+ ioMsgMaybe $ tcRnExpr hsc_env (hsc_IC hsc_env) expr
+ _ ->
+ liftIO $ throwIO $ mkSrcErr $ unitBag $
+ mkPlainErrMsg noSrcSpan
+ (text "not an expression:" <+> quotes (text expr))
-- | Find the kind of a type
hscKcType
- :: GhcMonad m =>
- HscEnv
+ :: HscEnv
-> String -- ^ The type
- -> m Kind
+ -> IO Kind
-hscKcType hsc_env str = do
- ty <- hscParseType (hsc_dflags hsc_env) str
- let icontext = hsc_IC hsc_env
- ioMsgMaybe $ tcRnType hsc_env icontext ty
+hscKcType hsc_env str = runHsc hsc_env $ do
+ ty <- hscParseType str
+ ioMsgMaybe $ tcRnType hsc_env (hsc_IC hsc_env) ty
#endif
\end{code}
\begin{code}
#ifdef GHCI
-hscParseStmt :: GhcMonad m => DynFlags -> String -> m (Maybe (LStmt RdrName))
+hscParseStmt :: String -> Hsc (Maybe (LStmt RdrName))
hscParseStmt = hscParseThing parseStmt
-hscParseType :: GhcMonad m => DynFlags -> String -> m (LHsType RdrName)
+hscParseType :: String -> Hsc (LHsType RdrName)
hscParseType = hscParseThing parseType
#endif
-hscParseIdentifier :: GhcMonad m => DynFlags -> String -> m (Located RdrName)
-hscParseIdentifier = hscParseThing parseIdentifier
+hscParseIdentifier :: HscEnv -> String -> IO (Located RdrName)
+hscParseIdentifier hsc_env str = runHsc hsc_env $
+ hscParseThing parseIdentifier str
-hscParseThing :: (Outputable thing, GhcMonad m)
- => Lexer.P thing
- -> DynFlags -> String
- -> m thing
- -- Nothing => Parse error (message already printed)
- -- Just x => success
-hscParseThing parser dflags str
- = (liftIO $ showPass dflags "Parser") >>
- {-# SCC "Parser" #-} do
- buf <- liftIO $ stringToStringBuffer str
+hscParseThing :: (Outputable thing)
+ => Lexer.P thing
+ -> String
+ -> Hsc thing
- let loc = mkSrcLoc (fsLit "<interactive>") 1 1
+hscParseThing parser str
+ = {-# SCC "Parser" #-} do
+ dflags <- getDynFlags
+ liftIO $ showPass dflags "Parser"
+
+ let buf = stringToStringBuffer str
+ loc = mkSrcLoc (fsLit "<interactive>") 1 1
case unP parser (mkPState dflags buf loc) of
- PFailed span err -> do
+ PFailed span err -> do
let msg = mkPlainErrMsg span err
- throw (mkSrcErr (unitBag msg))
+ liftIO $ throwIO (mkSrcErr (unitBag msg))
- POk pst thing -> do
-
- let ms@(warns, errs) = getMessages pst
- logWarnings warns
- when (errorsFound dflags ms) $ -- handle -Werror
- throw (mkSrcErr errs)
-
- --ToDo: can't free the string buffer until we've finished this
- -- compilation sweep and all the identifiers have gone away.
+ POk pst thing -> do
+ logWarningsReportErrors (getMessages pst)
liftIO $ dumpIfSet_dyn dflags Opt_D_dump_parsed "Parser" (ppr thing)
return thing
\end{code}
+\begin{code}
+hscCompileCore :: HscEnv
+ -> Bool
+ -> ModSummary
+ -> [CoreBind]
+ -> IO ()
+
+hscCompileCore hsc_env simplify mod_summary binds
+ = runHsc hsc_env $ do
+ let maybe_simplify mod_guts | simplify = hscSimplify' mod_guts
+ | otherwise = return mod_guts
+ guts <- maybe_simplify (mkModGuts (ms_mod mod_summary) binds)
+ (iface, changed, _details, cgguts) <- hscNormalIface guts Nothing
+ hscWriteIface iface changed mod_summary
+ _ <- hscGenHardCode cgguts mod_summary
+ return ()
+
+-- Makes a "vanilla" ModGuts.
+mkModGuts :: Module -> [CoreBind] -> ModGuts
+mkModGuts mod binds = ModGuts {
+ mg_module = mod,
+ mg_boot = False,
+ mg_exports = [],
+ mg_deps = noDependencies,
+ mg_dir_imps = emptyModuleEnv,
+ mg_used_names = emptyNameSet,
+ mg_rdr_env = emptyGlobalRdrEnv,
+ mg_fix_env = emptyFixityEnv,
+ mg_types = emptyTypeEnv,
+ mg_insts = [],
+ mg_fam_insts = [],
+ mg_rules = [],
+ mg_binds = binds,
+ mg_foreign = NoStubs,
+ mg_warns = NoWarnings,
+ mg_anns = [],
+ mg_hpc_info = emptyHpcInfo False,
+ mg_modBreaks = emptyModBreaks,
+ mg_vect_info = noVectInfo,
+ mg_inst_env = emptyInstEnv,
+ mg_fam_inst_env = emptyFamInstEnv
+}
+\end{code}
+
%************************************************************************
%* *
Desugar, simplify, convert to bytecode, and link an expression
\begin{code}
#ifdef GHCI
-compileExpr :: HscEnv -> SrcSpan -> CoreExpr -> IO HValue
-
-compileExpr hsc_env srcspan ds_expr
+hscCompileCoreExpr :: HscEnv -> SrcSpan -> CoreExpr -> IO HValue
+hscCompileCoreExpr hsc_env srcspan ds_expr
| rtsIsProfiled
- = throwIO (InstallationError "You can't call compileExpr in a profiled compiler")
+ = throwIO (InstallationError "You can't call hscCompileCoreExpr in a profiled compiler")
-- Otherwise you get a seg-fault when you run it
- | otherwise
- = do { let { dflags = hsc_dflags hsc_env ;
- lint_on = dopt Opt_DoCoreLinting dflags }
-
- -- Simplify it
- ; simpl_expr <- simplifyExpr dflags ds_expr
-
- -- Tidy it (temporary, until coreSat does cloning)
- ; let tidy_expr = tidyExpr emptyTidyEnv simpl_expr
-
- -- Prepare for codegen
- ; prepd_expr <- corePrepExpr dflags tidy_expr
-
- -- Lint if necessary
- -- ToDo: improve SrcLoc
- ; if lint_on then
- let ictxt = hsc_IC hsc_env
- tyvars = varSetElems (tyVarsOfTypes (map idType (ic_tmp_ids ictxt)))
- in
- case lintUnfolding noSrcLoc tyvars prepd_expr of
- Just err -> pprPanic "compileExpr" err
- Nothing -> return ()
- else
- return ()
-
- -- Convert to BCOs
- ; bcos <- coreExprToBCOs dflags prepd_expr
-
- -- link it
- ; hval <- linkExpr hsc_env srcspan bcos
-
- ; return hval
- }
+ | otherwise = do
+ let dflags = hsc_dflags hsc_env
+ let lint_on = dopt Opt_DoCoreLinting dflags
+
+ -- Simplify it
+ simpl_expr <- simplifyExpr dflags ds_expr
+
+ -- Tidy it (temporary, until coreSat does cloning)
+ let tidy_expr = tidyExpr emptyTidyEnv simpl_expr
+
+ -- Prepare for codegen
+ prepd_expr <- corePrepExpr dflags tidy_expr
+
+ -- Lint if necessary
+ -- ToDo: improve SrcLoc
+ if lint_on then
+ let ictxt = hsc_IC hsc_env
+ tyvars = varSetElems (tyVarsOfTypes (map idType (ic_tmp_ids ictxt)))
+ in
+ case lintUnfolding noSrcLoc tyvars prepd_expr of
+ Just err -> pprPanic "hscCompileCoreExpr" err
+ Nothing -> return ()
+ else
+ return ()
+
+ -- Convert to BCOs
+ bcos <- coreExprToBCOs dflags prepd_expr
+
+ -- link it
+ hval <- linkExpr hsc_env srcspan bcos
+
+ return hval
#endif
\end{code}
projects / ghc-hetmet.git / blobdiff